Foot-power hammer.



No. 644,589. Patented Mar. 6. I900. F. W. FURSTER.

FOOT POWER HAMMER.

(Application filed July 13, 1899.)

(No Model.)

lyifnesses: Izzz/enfor UNITED STATES- PATENT FFICE.

FRIEDRICH WVILHELM FORSTER, OF BURLINGTON, IOWA.

FOOT-POWER HAMMER.

SPECIFICATION forming part of Letters Patent No. 644,589, dated March 6,1900.

Application filed July 13, 1899. Serial No. 723,686. (No model.)

To all 11/71/0111 it may concern:

Be it known that I, FRIEDRICH WILHELM FGRSTER, of Burlington, in thecounty of Des Moines and State of Iowa, have invented certain new anduseful Improvements in Foot- Power Hammers; and I do hereby declare thefollowing to be a full, clear, and exact description of theinvention,such as wi ll enable others skilled in the art to which itappertains to make and use the same.

My invention relates to an improvement in foot-power hammers; and itconsists in certain novel features of construction and combinations ofparts, as will be hereinafter more fully described, and pointed out inthe claims.

In the accompanying drawings, Figure 1 represents a view of my inventionin its 0perative position on an anvil. Fig. 2 is a similar view of thereverse side of the same, some of the operating parts being broken away.Figs. 3 and 4 are views of detached parts.

V represents a base or support on which is suitably mounted an anvil A,which latter is preferably of the construction usually employed byblacksmiths. Removably secured on the prong of anvil A by the clips T Tare the two bent brackets K and L, between which the clamp for securinghandle 0 of hammer or sledge R is pivotally mounted, as will be morefully hereinafter described. This hammer-clamp is composed of twoparallel sections or blocks B B of suitable length, the former of whichis rigidly secured within the two loops or straps O 0, while the latterof said sections or blocks is loosely mounted in said loops or strapsand is adapted to be moved toward its mate or fellow by the set-screws PP, mounted in the screw-threaded openings in the upper ends of loops orstraps O C. By providing the adjacent faces of the parallel sections orblocks B B with the V-shaped grooves, as shown in Fig. 3 of thedrawings, a more rigid grip on handle 0 is secured, and all liability ofthe latter turning or twisting is prevented.

Secured to the outer face of movable section B and at a suitable pointbetween its ends is a bearing E, in which is mounted a sleeve E, throughwhich latter passes the axle or fulcrum E Through the medium of thisaxle or fulcrum E the hammer-clamp, previously described, is pivotallysupported between the bent brackets K and L, one end of said axle orfulcrum having its seat in vertical slot K of bracket K, while theopposite end thereof has its seat in bearing S, located in the upper endof bracket L. Surrounding sleeve E is a strap U, which is detachable bymeans of a set-screw U for the purpose of enabling the hammer-carryingframe or clamp to be shifted laterally when it is desirable to changethe striking-point of the hammer.

Axle or fulcrum E is prevented from moving laterally by means of a pinpassing through one end thereof at a point adjacent to its pivotalconnection with bracket L, while its opposite or screw-threaded end isprovided with a lever J, which latter rests against the outer face ofbracket K, the lever having a threaded hole to receive the threaded endof axle E The treadle E has its fulcrum on the base or support V at thepoint X and is connected to the hammer-carrying clamp at a point inadvance of bracket L by a spring-pitman D through the medium of hook H,carried by the upper member B of the hammer-carryin g frame.

The hammer-carrying frame is normally held in an elevated position by aspring F, the upper end of which is connected to the lower end of rod Gby means of a chain G while its opposite end is connected to an eyecarried by base or support V, as at IV. The upper end of rod G isconnected directly to the upper section or block 13' of the hammer-clampby a hook G. This spring F not only performs the function above noted,but also returns the hammer-clamp and hammer supported therein to itsnormal position as soon as pressure in a downward direction is removedfrom treadle E In actual operation the foot of the operator is placedupon the treadle E and forced downwardly, which throws the sledge orhammer down upon the anvil or on the tool N, as the case may be, withmore or less force, depend ent upon the pressure applied and at the willof the operator.

When the device is used for rounding iron, or making a shoulder uponiron, or squaring iron, the position of the various parts is as shown inthe drawings. When, however, it

is desired to strike the sledge upon the surface of the anvil, as whensharpening a plowshare, the fulcrum-pin or axle E is removed from itsbearing S in bracket L by slightly twisting the latter to one side andlowering said axle or fulcrum to a point opposite hearing S in bracketL, after which bracket L is turned back to its proper position and thefulcrum-pin or axle fastened into said hearing S. When the hammerclampis lowered as just described, the rods D and 1 are detached from saidhammer-clamp and shortened by rehooking them into the holes II and G,respectively. The tension of spring F may be regulated as desired bymeans of chain G".

In cases where it is desirable to use the anvil without removing thestriking mechanism therefrom the hook M is broughtover the bent bracketL, whereby the hammer will be held in a perpendicular position andagainst accidental displacement.

It is evident that changes in the construction and relative arrangementof the several parts might be made without avoiding my invention. Forinstance, any suitable arrangement for supporting brackets K and L mightbe employed in lieu of support V and anvil A, and hence I would have itunderstood that I do not restrict myself to the employment of the baseand anvil shown nor do I wish to confine myself to the particularconstruction and arrangement of the remaining parts shown and described;but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with a bracket, of a clamp for a hammer pivotallymounted in said bracket, and means for adjusting the pivotal support ofthe clamp both vertically and laterally.

2. The combination with a bracket orstandard comprising two members, ofa clamp for a hammer disposed between the members of the clamp orsupport, a pin passing through said members and pivotally connected withthe clamp, means for adjusting the clamp laterally on said pin, andmeans for permitting a vertical adjustment of said pin.

3. The combination with a bracket or support comprising two members, anda clamp for a hammer disposed between the members of the bracket orsupport, of a sleeve mounted on the clamp, a plate for normally securingthe sleeve to the clamp, means for releasing the sleeve from the plateto permit the adjustment of the sleeve, and a pin passing through themembers of the bracket or support and said sleeve.

4. The combination with a bracket comprising two members and means atthe lower end of said bracket for securing it to an anvil, of a clampdisposed between the members of the bracket and comprising two parallelelongated members for the reception of the handle of a hammer betweenthem, a pin passing through the members of the bracket and pivotallysupporting the clamp, means for vertically adjusting said pin and meansfor effecting the lateral adjustment of the clamp on said pin.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

\Vitnesses:

GEORGE SMITH, (bus. 0. CLARK.

